I mean.... that's their job if he's not the best guy. And if he's not willing to sit down for a better player you should trade him.The Marcus v. DW & MB is an interesting thought exercise, but if we're being honest here who among us, Joe Mazulla, Brad, or anyone else is going to tell Marcus F'N Smart that he's sitting in crunch-time? If the dude has two functional legs he's going to be in every single crunch-time scenario from now until they win the championship or get knocked out.
If Marcus wants to play in crunch time he should try rebounding the ball more than three of every 100 possessions.